WordPress Miscellaneous Settings to Protect or Easier Backup of Files
http://www.syamsulalam.com/newbie-sec...
For you who want to know more about wordpress technical details and being rather expert on it, I suggest you to go to link above.
Anyway, this short video will show you what miscellaneous settings can do for you to protect your uploaded document and simplify your backup process.
Hope this help, folks!